Selmer Truvoice Universal 12U - Channel 1 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

An early Selmer Truvoice amplifier built to run on AC or DC mains. It has two transformer-coupled inputs and a push-pull valve output of about 12 watts. Its simple post-war design gives a warm, clean voice.

• Made in: UK
• Wattage: 12W
• Channels: 2

Tags: british, vintage, clean, low-wattage, two-channel.

Schematic-derived preset files for the Neural DSP Quad Cortex and 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.